it is also the usage of bitcoin that makes it more valuable. Satoshi created a decentralized payment system for anyone to use without any problems or restrictions. and as bitcoin gets closer to being a real currency instead of just being for speculation, the price of it grows and that makes it more valuable.
that is why i am very excited about Lightning Network because it helps with the currency aspect of bitcoin with fast transactions and low fees. hopefully we can get cheap on chain transactions back so that LN can work better.
I strongly agree on your opinion that, it is also the usage of bitcoin that makes it more valuable and Satoshi created a decentralized payment system for anyone to use without any problems or restrictions. And adding also my opinion that, These are anonymity and the possibility to make international transactions for a very small fee and its also a decentralized currency, which is very important. In addition, Bitcoin has a limited supply and the basic economics system which is supply and demand works in BItcoin. On the other hand, BTC is valuable, because it is valuable, the same reason anything else is, something is worth what someone is willing to give/trade you for it.